Buggy code:
@ SuppressWarnings ( "serial" ) public class DispatcherServlet extends FrameworkServlet { public static final String MULTIPART_RESOLVER_BEAN_NAME = "multipartResolver" ; public static final String LOCALE_RESOLVER_BEAN_NAME = "localeResolver" ; public static final String THEME_RESOLVER_BEAN_NAME = "themeResolver" ; public static final String HANDLER_MAPPING_BEAN_NAME = "handlerMapping" ; public static final String HANDLER_ADAPTER_BEAN_NAME = "handlerAdapter" ; public static final String HANDLER_EXCEPTION_RESOLVER_BEAN_NAME = "handlerExceptionResolver" ; public static final String REQUEST_TO_VIEW_NAME_TRANSLATOR_BEAN_NAME = "viewNameTranslator" ; public static final String VIEW_RESOLVER_BEAN_NAME = "viewResolver" ; public static final String FLASH_MAP_MANAGER_BEAN_NAME = "flashMapManager" ; public static final String WEB_APPLICATION_CONTEXT_ATTRIBUTE = ( DispatcherServlet . class . getName ( ) ) + ".CONTEXT" ; public static final String LOCALE_RESOLVER_ATTRIBUTE = ( DispatcherServlet . class . getName ( ) ) + ".LOCALE_RESOLVER" ; public static final String THEME_RESOLVER_ATTRIBUTE = ( DispatcherServlet . class . getName ( ) ) + ".THEME_RESOLVER" ; public static final String THEME_SOURCE_ATTRIBUTE = ( DispatcherServlet . class . getName ( ) ) + ".THEME_SOURCE" ; public static final String INPUT_FLASH_MAP_ATTRIBUTE = ( DispatcherServlet . class . getName ( ) ) + ".INPUT_FLASH_MAP" ; public static final String OUTPUT_FLASH_MAP_ATTRIBUTE = ( DispatcherServlet . class . getName ( ) ) + ".OUTPUT_FLASH_MAP" ; public static final String FLASH_MAP_MANAGER_ATTRIBUTE = ( DispatcherServlet . class . getName ( ) ) + ".FLASH_MAP_MANAGER" ; public static final String PAGE_NOT_FOUND_LOG_CATEGORY = "org.springframework.web.servlet.PageNotFound" ; private static final String DEFAULT_STRATEGIES_PATH = "DispatcherServlet.properties" ; protected static final Log pageNotFoundLogger = LogFactory . getLog ( DispatcherServlet . PAGE_NOT_FOUND_LOG_CATEGORY ) ; private static final UrlPathHelper urlPathHelper = new UrlPathHelper ( ) ; private static final Properties defaultStrategies ; private boolean detectAllHandlerMappings = true ; private boolean detectAllHandlerAdapters = true ; private boolean detectAllHandlerExceptionResolvers = true ; private boolean detectAllViewResolvers = true ; private boolean cleanupAfterInclude = true ; private MultipartResolver multipartResolver ; private LocaleResolver localeResolver ; private ThemeResolver themeResolver ; private List < HandlerMapping > handlerMappings ; private List < HandlerAdapter > handlerAdapters ; private List < HandlerExceptionResolver > handlerExceptionResolvers ; private RequestToViewNameTranslator viewNameTranslator ; private FlashMapManager flashMapManager ; private List < ViewResolver > viewResolvers ; public DispatcherServlet ( ) { } public DispatcherServlet ( WebApplicationContext webApplicationContext ) { } public void setDetectAllHandlerMappings ( boolean detectAllHandlerMappings ) { } public void setDetectAllHandlerAdapters ( boolean detectAllHandlerAdapters ) { } public void setDetectAllHandlerExceptionResolvers ( boolean detectAllHandlerExceptionResolvers ) { } public void setDetectAllViewResolvers ( boolean detectAllViewResolvers ) { } public void setCleanupAfterInclude ( boolean cleanupAfterInclude ) { } @ Override protected void onRefresh ( ApplicationContext context ) { } protected void initStrategies ( ApplicationContext context ) { } private void initMultipartResolver ( ApplicationContext context ) { } private void initLocaleResolver ( ApplicationContext context ) { } private void initThemeResolver ( ApplicationContext context ) { } private void initHandlerMappings ( ApplicationContext context ) { } private void initHandlerAdapters ( ApplicationContext context ) { } private void initHandlerExceptionResolvers ( ApplicationContext context ) { } private void initRequestToViewNameTranslator ( ApplicationContext context ) { } private void initViewResolvers ( ApplicationContext context ) { } private void initFlashMapManager ( ApplicationContext context ) { } public final ThemeSource getThemeSource ( ) { } public final MultipartResolver getMultipartResolver ( ) { } protected < T > T getDefaultStrategy ( ApplicationContext context , Class < T > strategyInterface ) { } @ SuppressWarnings ( "unchecked" ) protected < T > List < T > getDefaultStrategies ( ApplicationContext context , Class < T > strategyInterface ) { } protected Object createDefaultStrategy ( ApplicationContext context , Class < ? > clazz ) { } @ Override protected void doService ( HttpServletRequest request , HttpServletResponse response ) throws Exception { } protected void doDispatch ( HttpServletRequest request , HttpServletResponse response ) throws Exception { } private void applyDefaultViewName ( HttpServletRequest request , ModelAndView mv ) throws Exception { } private void processDispatchResult ( HttpServletRequest request , HttpServletResponse response , HandlerExecutionChain mappedHandler , ModelAndView mv , Exception exception ) throws Exception { } @ Override protected LocaleContext buildLocaleContext ( final HttpServletRequest request ) { } protected HttpServletRequest checkMultipart ( HttpServletRequest request ) throws MultipartException { } protected void cleanupMultipart ( HttpServletRequest servletRequest ) { } @ Deprecated protected HandlerExecutionChain getHandler ( HttpServletRequest request , boolean cache ) throws Exception { } protected HandlerExecutionChain getHandler ( HttpServletRequest request ) throws Exception { } protected void noHandlerFound ( HttpServletRequest request , HttpServletResponse response ) throws Exception { } protected HandlerAdapter getHandlerAdapter ( Object handler ) throws ServletException { for ( HandlerAdapter ha : this . handlerAdapters ) { if ( logger . isTraceEnabled ( ) ) { logger . trace ( ( ( "Testing<seq2seq4repair_space>handler<seq2seq4repair_space>adapter<seq2seq4repair_space>[" + ha ) + "]" ) ) ; } if ( ha . supports ( handler ) ) { return ha ; } } <START_BUG> throw new ServletException ( ( ( "No<seq2seq4repair_space>adapter<seq2seq4repair_space>for<seq2seq4repair_space>handler<seq2seq4repair_space>[" + handler ) + "]:<seq2seq4repair_space>Does<seq2seq4repair_space>your<seq2seq4repair_space>handler<seq2seq4repair_space>implement<seq2seq4repair_space>a<seq2seq4repair_space>supported<seq2seq4repair_space>interface<seq2seq4repair_space>like<seq2seq4repair_space>Controller?" ) ) ; <END_BUG> } protected ModelAndView processHandlerException ( HttpServletRequest request , HttpServletResponse response , Object handler , Exception ex ) throws Exception { } protected void render ( ModelAndView mv , HttpServletRequest request , HttpServletResponse response ) throws Exception { } protected String getDefaultViewName ( HttpServletRequest request ) throws Exception { } protected View resolveViewName ( String viewName , Map < String , Object > model , Locale locale , HttpServletRequest request ) throws Exception { } private void triggerAfterCompletion ( HttpServletRequest request , HttpServletResponse response , HandlerExecutionChain mappedHandler , Exception ex ) throws Exception { } private void triggerAfterCompletionWithError ( HttpServletRequest request , HttpServletResponse response , HandlerExecutionChain mappedHandler , Error error ) throws Exception , ServletException { } private void restoreAttributesAfterInclude ( HttpServletRequest request , Map < ? , ? > attributesSnapshot ) { } }

Fix:
throw new ServletException ( ( ( "No<seq2seq4repair_space>adapter<seq2seq4repair_space>for<seq2seq4repair_space>handler<seq2seq4repair_space>[" + handler ) + "]:<seq2seq4repair_space>The<seq2seq4repair_space>DispatcherServlet<seq2seq4repair_space>configuration<seq2seq4repair_space>needs<seq2seq4repair_space>to<seq2seq4repair_space>include<seq2seq4repair_space>a<seq2seq4repair_space>HandlerAdapter<seq2seq4repair_space>that<seq2seq4repair_space>supports<seq2seq4repair_space>this<seq2seq4repair_space>handler" ) ) ;